CN105401525B - Cast-in-situ construction method of beam flange plates of acoustic barriers through movable mold base vehicles - Google Patents

Abstract

The invention discloses a cast-in-situ construction method of beam flange plates of acoustic barriers through movable mold base vehicles, and relates to the technical field of bridge construction. The cast-in-situ construction method comprises the specific construction technological processes of preparing for construction; assembling the mold base vehicles; enabling the mold base vehicles to run to proper positions, and inspecting equipment; enabling templates to drop off to proper positions; enabling finish rolling screw-thread steel to be mounted; binding reinforcing bars, and placing embedded parts; mounting hanging molds and explorators; casting concrete; disassembling molds; lifting bottom molds and shifting to another site. According to the construction method disclosed by the invention, the problem that the cast-in-situ construction of flange plates of a high pier is difficult is solved; besides, the construction method is safe and reliable, and is simple and convenient to apply.

Description

Mobile formwork car sound barrier beam flange plate cast-in-situ construction method

Technical field

The present invention relates to technical field of bridge construction, especially a kind of to be adapted to list two-wire, have under rail-free operating mode using shifting Dynamic model unwheeling carries out sound barrier beam flange plate cast-in-situ construction method.

Background technology

With the high speed development that domestic railway infrastructure is built, feelings of a large amount of railways by residential neighborhood are emerged Condition, in order to reduce noise of driving a vehicle, reduces the noise jamming to surrounding, needs to arrange sound barrier on the outside of bridge.For this Ministry of Railways Economic planning academy will be issued in the end of the year 2012《The prefabricated post stretching Simple T-Girders of Speed 200 km/h mixed passenger and freight railway (set sound Barrier)》Figure number：(2012) 2209 generalized reference figure of logical bridge, and《The prefabricated post stretching freely-supported T of 160 kilometers of mixed passenger and freight railways of speed per hour Beam (sets sound barrier)》Figure number：(2012) 2109 generalized reference figure of logical bridge, this two kinds of beam type are widely used in recent years.

2109 and 2209 type T beams (setting sound barrier) after the prefabricated erected on site of Zhi Liang factories, the wing of cast-in-place longer width of still needing Listrium (the cast-in-place length of 2109 beams be 1.35m, the cast-in-place 1.62m of 2209 beams), existing cast-in-place method is using setting up at flange plate edge Fixed simple truss is constructed, and does not only exist the personal safety hidden danger of workman, and labor intensity height, low construction efficiency, sternly Ghost image rings construction speed and the performance of enterprises, also reduces indirectly social benefit.

Logical bridge (2012) 2109,2209 railway prefabricated post stretching Simple T-Girders (setting sound barrier) are due to simple structure, manufacture fortune Defeated maintenance is convenient, low cost has obvious advantage compared with box beam, therefore the railway line below speed 200km at home and abroad It is upper extensively to apply.But country's construction equipment has deficiency following aspects at present, need to protect by counterweight and lock nut The stability of card mould bases, contour size of the unit(s) transport inconvenience bigger than normal；Monolithic most molality type needs 4 people to carry, and removes and installs inconvenience； Without the conversion inconvenience of running gear station；Whole equipment cannot ensure precise positioning using rigidity docking；There is peace in work progress Full hidden danger.Mobile formwork car have operation simple, easy accessibility, it is safe and reliable, adapt to different operating modes, whole hole beam flange plate one It is secondary the characteristics of pour molding, bridge flange plate construction speed can be accelerated on the basis of quality and safety is ensured, save a large amount of people Power, material resources.

In order to solve the above problems, the Zhong Tie Second Academys have applied for a patent《Railway freely-supported T beam length flange plate rapid constructions Mould bases car》（Application No. 201410736843.8）In, a kind of mould bases car is disclosed, railway letter can be realized using the mould bases car T beam length flange plate rapid constructions are propped up, the quick one-time cast-forming of various working bottom wing listrium and sound barrier basis is completed, can So that efficiency of construction and working security is significantly increased.But for the technique mistake of fast pouring construction is carried out using mould bases car Journey is not but provided, and is made user when each operating mode flange plate cast-in-place construction is carried out using mould bases car, constructional difficulties is occurred.

The content of the invention

The technical problem to be solved in the present invention is to provide a kind of mobile formwork car sound barrier beam flange plate cast-in-situ construction method, The method solves the difficult situation of each operating mode bottom wing listrium cast-in-place construction, and safe and reliable, easy to operate.

To solve above-mentioned technical problem, the technical solution used in the present invention is：A kind of mobile formwork car sound barrier beam wing Listrium cast-in-situ construction method, it is characterised in that Specific construction technological process is：Preparation of construction → mould bases car assembling → traveling in place, Inspection equipment → template falls in place → fining twisted steel → establishment reinforcing bar is installed, lay built-in fitting → installation extension mould and pattern → Concreting → form removal → lifting bed die, transition；

Preparation of construction：Assembling place is reconnoitred to job site, the position of equipment in work progress is determined, to equipment Use requirement plan ahead, carry out work of confiding a technological secret in advance, carry out safety measure prepare and communication and coordination work；

Mould bases car is assembled：Mould bases car adopts double track walking mould bases car, mainly including walking system, hoisting system, template Assembly, is connected using flange between supporting rack and lateral wing support, and being connected with each other using shearing resistance pin connection between remainder is pressed Mould bases car each several part is assembled according to existing assembling scheme；The 9 monomer mould bases of mould bases point used cooperatively with mould bases car, often Individual monomer mould bases is according to construction demand, it is intended that the size and shape of bed die, according to the good each bed die position of Operating condition adjustment during assembling；

Traveling in place, checks equipment：Fixed position is set up according to loose pattern, position adjustment is carried out to mould bases car, is traveled to Behind position, check whether mould bases car runnability is good；

Template falls in place：Monomer mould bases is lifted using mould bases car, coordinate running gear and hoisting system, adjustment The position of template, is placed in loose pattern frame setting position template；After template falls in place, the seam of template should be first checked not There should be spillage phenomenon, there should not be seeping phenomenon, will also ensure the built-in fitting being fixed in template first, preformed hole and hole to be provided are equal Must not omit and should firmly install；

Fining twisted steel is installed：Fining twisted steel is being installed, end is being carried out to template and is fixed, screw thread is even being adjusted by nut The elongation of steel, it is ensured that the left and right two ends of template are in same level position；

Establishment reinforcing bar, lays built-in fitting：Before pouring, to beam body reinforcing bar and floorings steel bar overall binding, first in rice The colligation of beam body reinforcing bar is carried out in plate, is then carried out again and floorings reinforcing bar colligation, finally beam body reinforcing bar and bridge floor slab Muscle is attached colligation, and while colligation, placement pours built-in fitting；

Pattern is installed and mould is hung：Pattern is installed in the left side of template, is installed in the top of template and is hung mould, form beam body and pour Transverse section；Pattern is installed and when hanging mould, should ensure that template is cleaned up and brushing interleaving agent with concrete surface product, but not The interleaving agent for affecting structural behaviour or hindering decorative engineering construction must be adopted；

Concreting：The mode of pouring is in the both sides of template while pouring, and on the outside of template, cast-in-place floorings are fine using C50 Dimension concrete, gear Zha Qiang adopt C40 concrete；

Form removal：Form removal should be carried out according to the order for removing extension mould → dismounting fining twisted steel → dismounting pattern；

Bed die is lifted, traveling is constructed to next station.

Above-mentioned technical process is further supplemented, described establishment reinforcing bar, laid in built-in fitting step, when beam body reinforcing bar When colliding with deformed bar, can suitably move beam body reinforcing bar or suitably be bent；Tie wire rear must not stretch into protection In layer, the accuracy of reinforcement location, the movement that reinforcing bar can be appropriate at bridge floor spilled water hole are noted during construction, and sets up spiral Strengthened；During cast-in-place floorings reinforcing bar colligation, the reinforcing bar of spreading is fully overlapped with pre-buried reinforcing bar and colligation is firm, pre-buried sound Barrier basis and refuge platform check terraced anchoring piece；When net protective layer thickness is controlled using cushion block, cushion block should be using same with beam body The material in life-span.

Above-mentioned technical process is further supplemented, in the concreting step, before casting concrete, is examined first The sealing situation of template is looked into, the both sides beam body concrete to pouring part carries out abundant moistening, then casting concrete；Concrete is filled Strengthen Vibration Technology during building, to ensure concrete compaction, prevent cavity, construction is finished to be carried out to concrete in rear 1h Heat and moisture preserving is conserved.

Using the beneficial effect produced by above-mentioned technical proposal it is：Construction method in the present invention is used for flange plate cast-in-place Construction, sets up compared with scaffold, simple mould bases etc. carry out traditional construction with employing, but due to bridge pier height difference it is larger, it is special Operating mode is more, and conventional construction method considerably increases construction site management expense, and is coordinated using mobile formwork car in the application This construction method, then be lost low, and turnover is fast, reduces construction site management expense；This method is when mobile formwork car is operated, easy Fast, and ensure that mould bases car security and stability is good, efficiency of construction is high, the edge of a wing is completed with guaranteeing both quality and quantity according to the node duration Plate cast-in-place construction, is that subsequent construction project runs smooth there is provided condition, for similar project under construction provide reference and according to According to having obtained the consistent favorable comment of the public, created preferable social benefit.

Description of the drawings

The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.

Fig. 1 is the process chart of the present invention；

Fig. 2 is the structural representation of middle mold unwheeling of the present invention；

Wherein：1st, fixed pulley group, 2, lateral wing support one, 3, increase section, 4, upper frame, 5, supporting rack, 6, raising elevator, 7, side Wing support two, 8, system out of shape, 9, die assembly.

Specific embodiment

1 understand with reference to the accompanying drawings, the application is specifically related to a kind of mobile formwork car sound barrier beam flange plate cast-in-situ construction method, The method is mainly used in single two-wire, has the T-shaped sound barrier beam of rail-free, cast-in-place construction of the flange plate lateral length less than 1.35m.Tool Body construction technological process is：Preparation of construction → mould bases car assembling → traveling in place, checks that equipment → template falls in place → installs Fining twisted steel → establishment reinforcing bar, lays built-in fitting → installation and hangs mould and pattern → concreting → form removal → lifting bed die, Transition.The method is to be summarized to form according to engineering construction practical experience.

The principle of construction method in the application：Construction operating mode have single line or two-wire, whether there is lay a railway track, unilateral or bilateral connects Dividing for net-fault, according to field working conditions needs, makes various vehicles and mould composition adapts to operating mode TYMC mobile formwork car at that time and enters Row construction.

Its specific construction technology is as follows：

1. preparation of construction

To the good assembling place in scene, arrangement and method for construction is determined, the use requirement of equipment is planned ahead.Do in advance Confide a technological secret well work, carry out safety measure preparation, carry out communication and coordination work.

2. mould bases car assembling

TYMC mould bases car owner will have：Walking system, hoisting system, template assembly, as shown in Figure 2.Supporting rack and flank Connected using flange between support, being connected with each other using shearing resistance pin connection between remainder, its performance is mainly reflected in Connection speed is fast, job stability reliability, equipment is assembled according to assembling scheme.

3. traveling in place, checks equipment

Before starting construction, first have to detect mould bases car walking system：1）It is existing whether hydraulic oil whether there is oil leak enough As 2）Oil circuit whether positive normal open control valve whether normal 3）Whether whether circuit connects leaky 4）Whether electric switch is complete The good phenomenon either with or without loose contact.Basic parameter 5m/min according to mould bases car carries out control to walking system.

4. template falls in place

After template falls in place, should first check that the seam of template there should not be spillage phenomenon, there should not be seeping phenomenon.First To also ensure that the built-in fitting being fixed in template, preformed hole and hole to be provided must not be omitted and should be firmly installed.

5. fining twisted steel is installed

When fining twisted steel is installed, first have to detect the uniform stressed of each screw-thread steel and the intensity of tensioning.

6. reinforcing bar is worked out, built-in fitting is laid

Beam body reinforcing bar answers overall binding, the colligation of advanced cross girders body reinforcing bar with floorings reinforcing bar.During precast beam reinforced bar colligation Note pre-buried cast-in-place floorings and gear Zha Qiang connection reinforcing bars.When beam body steel-bar and stress technique reinforcing bar is collided, can appropriate trave lling girder Body reinforcing bar is suitably bent.Tie wire rear must not be stretched in protective layer, and the standard of reinforcement location is also noted that during construction Really property, the movement that reinforcing bar can be appropriate at bridge floor spilled water hole, and set up spiral and strengthened.Cast-in-place floorings reinforcing bar colligation When, the reinforcing bar of spreading is fully overlapped with pre-buried reinforcing bar and colligation is firm, and notices that pre-buried sound barrier basis and refuge platform check Terraced anchoring piece.When using cushion block control net protective layer thickness when, cushion block should using with beam body with the life-span material, and ensure beam body Durability.

7. pattern is installed and mould is hung

Pattern is installed and when hanging mould, should ensure that template is cleaned up and brushing interleaving agent with concrete surface product, but must not Using the interleaving agent for affecting structural behaviour or hinder decorative engineering to construct.

8. concreting

The cast-in-place floorings in outside adopt C50 fiber concretes, gear Zha Qiang to adopt C40 concrete.It is before casting concrete, first The sealing situation of template is checked first, the both sides beam body concrete to pouring part carries out abundant moistening, then casting concrete.Coagulation Strengthen Vibration Technology during native placing, to ensure concrete compaction, prevent cavity, construction is finished in rear 1h to coagulation Soil carries out heat and moisture preserving maintenance.

9. form removal

Form removal should be carried out according to the order for removing extension mould → dismounting fining twisted steel → dismounting pattern.

10. bed die is lifted, next station construction is traveled to.

Above-mentioned construction method is applied to single two-wire, has the T-shaped sound barrier beam of rail-free, and flange plate lateral length is less than 1.35m Cast-in-place construction, solve the situation of high pier flange plate cast-in-place constructional difficulties, and safe and reliable, it is easy to operate.

Mould bases car in the present invention can realize united application：Mobile formwork car is by 9 lists with different size bed die Body mobile formwork is combined, and is needed according to on-site actual situations, such as contact net position, widen the mobile mould little to 9 such as requirement Unwheeling is combined, and completes construction as requested.Meanwhile, it is the change for adapting to different beam type in beam cross section transverse width direction Require, TYMC pattern unwheelings are divided into three kinds of subtypes, needs carry out multi-form to mould bases car according to live actual condition Assembling is used.

The hoisting system of mobile formwork car in the present invention, every group of shifting formwork car are made up of four groups of raising elevators 6, raising elevator 6 It is made up of motor, reductor, reel, steel wire rope, axle sleeve, bearing block, mounting seat etc..Four groups of elevators 6 are by four steel wire ropes point It is not connected, it is possible to achieve four groups, two groups of linkages or each elevator single action, if more preferably utilized, it is also possible in adjustment template procedure In can also realize bridge floor para-position adjustment not at ordinary times, preferably adapt to being actually needed for engineering construction.

In addition, before this construction method is carried out, in needing the preparation of construction done, technique preparation requires as follows：

1）Establishment erecting beam construction scheme；

2）The relevant material supply plan of report is put forward, including material requested of setting a roof beam in place, instrument, equipment and spare part etc.；

3）Related personnel is giveed training, Its Relevant Technology Standards are carried out clearly；

4）Data that establishment cast-in-place construction is confided a technological secret and safety is told somebody what one's real intentions are；

5）Check model, length, span and height, branch's situation of sound barrier beam；

6）Mould bases car peace tears the determination in place open.

Also need to be prepared construction equipment as follows：

1）The transport of mould bases car and auxiliary device；

2）The maintenance of mould bases car；

3）Supporting suspender, the calculating of steel wire rope and preparation；

4）The preparation of the equipment such as model crane needed for mobile formwork car is cast-in-place.

Goods and materials prepare as follows：

1）Including other goods and materials to needing during erecting beam construction such as skate, fining twisted steel, screw jack, steel The ready work such as the welding rods such as rail, electromotor, chain block, diesel oil, the spare part of setting up girder；

2）Emergency article and equipment prepare；

3）Goods and materials under the conditions of winter, rainy season etc. prepare.

The process that this construction method is formed, has implemented the relevant requirement of national energy-saving engineering, in equipment Manufacture Process, with Construction can be completed, it is ensured that safe mass is principle, reduce waste of material, electromotor has met action needs for principle, be reduced The wasting of resources, had both met the needs of flange plate cast-in-place construction, had saved the energy again.

Had a extensive future using the mobile formwork vehicle device of present invention assembling：As sound barrier beam is had begun in the whole nation Railway widespread adoption, TYMC mobile formworks have a extensive future；Little tonnage 25T crane tonnages are low, obtain easy, and assembling is disassembled It is convenient；Flange plate cast-in-place construction work is more, and TYMC equipment continuously can be used, and is unlikely to cause equipment to stagnate waste.

The construction technology of the present invention saves construction cost：Assembling is disassembled to be assembled under bridge using large tonnage crane and is applied Work, but as bridge pier height difference is larger, special operation condition is more, considerably increases construction site management expense；Using little tonnage Crane in beam face, disassemble by assembling, and template is placed on both sides, and efficiency high reduces construction site management expense.

The construction technology social benefit of the present invention is obvious：This kind of method is easy to operate, and security and stability is good, efficiency of construction Height, complete assembling with guaranteeing both quality and quantity according to the node duration and disassemble work, is that subsequent construction runs smooth there is provided condition, obtains The consistent favorable comment of the public has been arrived, preferable social benefit has been created.

Based on the technological process of the present invention, coordinate TYMC mould bases cars, in certain highway special Bridge Construction, for 45- 10 single line hole of 55# piers, 17 two-wire hole of 166-183 ＇ # piers and 38 two-wire hole of 75-116# piers（Containing 3 two-wire hole continuous beams）Sound barrier Beam flange plate cast-in-place construction, two-wire all do not lay the section of track, have smoothly completed all sound barrier beam wings using TYMC mobile formwork cars Listrium cast-in-place construction.

Claims (1)

1. a kind of mobile formwork car sound barrier beam flange plate cast-in-situ construction method, it is characterised in that the cast-in-situ construction method is used for the wing Listrium lateral length is less than the cast-in-place construction of 1.35m, and Specific construction technological process is：Preparation of construction → mould bases car assembling → traveling In place, check equipment → template fall in place → fining twisted steel → establishment reinforcing bar is installed, lay built-in fitting → installations extension mould with Pattern → concreting → form removal → lifting bed die, transition；

Preparation of construction：Assembling place is reconnoitred to job site, the position of equipment in work progress is determined, equipment is made With requiring to plan ahead, work of confiding a technological secret is carried out in advance, carry out safety measure and prepare and communication and coordination work；

Mould bases car is assembled：Mould bases car adopts double track walking mould bases car, mainly including walking system, hoisting system, template assembly, Connected using flange between supporting rack and lateral wing support, being connected with each other using shearing resistance pin connection between remainder, according to existing Some assembling schemes are assembled to mould bases car each several part；The 9 monomer mould bases of mould bases point used cooperatively with mould bases car, each list Body mould bases is according to construction demand, it is intended that the size and shape of bed die, according to the good each bed die position of Operating condition adjustment during assembling；

Traveling in place, checks equipment：Fixed position is set up according to loose pattern, position adjustment is carried out to mould bases car, after traveling in place, Check whether mould bases car runnability is good；

Template falls in place：Monomer mould bases is lifted using mould bases car, coordinate running gear and hoisting system, adjust template Position, template is placed in loose pattern frame setting position；After template falls in place, should first check that the seam of template should not have Spillage phenomenon, should not have seeping phenomenon, will also ensure that the built-in fitting being fixed in template, preformed hole and hole to be provided must not first Omit and should firmly install；

Fining twisted steel is installed：Fining twisted steel is being installed, end is being carried out to template and is fixed, screw-thread steel is even being adjusted by nut Elongation, it is ensured that the left and right two ends of template are in same level position；

Establishment reinforcing bar, lays built-in fitting：Before pouring, to beam body reinforcing bar and floorings steel bar overall binding, first in rice plate The colligation of beam body reinforcing bar is carried out, is then carried out again and floorings reinforcing bar colligation, finally beam body reinforcing bar and floorings reinforcing bar is entered Row connection colligation, while colligation, placement pours built-in fitting；When beam body steel-bar and stress technique reinforcing bar is collided, suitably can move Dynamic beam body reinforcing bar is suitably bent；Tie wire rear must not be stretched in protective layer, and the standard of reinforcement location is noted during construction Really property, the movement that reinforcing bar can be appropriate at bridge floor spilled water hole, and set up spiral and strengthened；Cast-in-place floorings reinforcing bar colligation When, the reinforcing bar of spreading is fully overlapped with pre-buried reinforcing bar and colligation is firm, and pre-buried sound barrier basis and refuge platform check ladder anchoring Part；When using cushion block control net protective layer thickness when, cushion block should using with beam body with the life-span material；

Pattern is installed and mould is hung：Pattern is installed in the left side of template, is installed in the top of template and is hung mould, form the horizontal stroke that beam body is poured Section；Pattern is installed and when hanging mould, should ensure that template is cleaned up and brushing interleaving agent with concrete surface product, but must not adopt With the interleaving agent for affecting structural behaviour or hinder decorative engineering to construct；

Concreting：The mode of pouring is in the both sides of template while pouring, and on the outside of template, cast-in-place floorings are mixed using C50 fibers Solidifying soil, gear Zha Qiang adopt C40 concrete；Before casting concrete, the sealing situation of template is first checked for, two to pouring part Curb girder body concrete carries out abundant moistening, then casting concrete；Strengthen Vibration Technology during concrete placing, to ensure coagulation Soil is closely knit, prevents cavity, and construction is finished in rear 1h and carries out heat and moisture preserving maintenance to concrete；

Form removal：Form removal is carried out according to the order for removing extension mould → dismounting fining twisted steel → dismounting pattern；

Bed die is lifted, traveling is constructed to next station.